Sustainable cities and communities

Make cities inclusive, safe, resilient and sustainable

More than half of the world’s population now lives in urban areas. By 2050, that figure will have risen to 6.5 billion people – two-thirds of humanity. Sustainable development cannot be achieved without significantly transforming the way we build and manage our urban spaces.

The rapid growth of cities in the developing world, coupled with increasing rural to urban migration, has led to a boom in mega-cities. In 1990, there were ten mega-cities with 10 million inhabitants or more. In 2014, there are 28 mega-cities, home to a total of 453 million people.

Extreme poverty is often concentrated in urban spaces, and national and city governments struggle to accommodate the rising population in these areas. Making cities safe and sustainable means ensuring access to safe and affordable housing, and upgrading slum settlements. It also involves investment in public transport, creating green public spaces, and improving urban planning and management in a way that is both participatory and inclusive.


SDG 11: Make cities inclusive, safe, resilient and sustainable

Facts and Figures

4.2 billion

In 2018, 4.2 billion people, 55 percent of the world’s population, lived in cities. By 2050, the urban population is expected to reach 6.5 billion.

3%

Cities occupy just 3 percent of the Earth’s land but account for 60 to 80 percent of energy consumption and at least 70 percent of carbon emissions.

828 million

828 million people are estimated to live in slums, and the number is rising.

33

In 1990, there were 10 cities with 10 million people or more; by 2014, the number of mega-cities rose to 28, and was expected to reach 33 by 2018. In the future, 9 out of 10 mega-cities will be in the developing world.

90%

In the coming decades, 90 percent of urban expansion will be in the developing world.

80%

The economic role of cities is significant. They generate about 80 percent of the global GDP.